package com.syyo.gulimall.coupon.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.syyo.common.enums.ResultEnum;
import com.syyo.common.exception.SysException;
import com.syyo.gulimall.coupon.domain.entity.HomeSubjectEntity;
import com.syyo.gulimall.coupon.domain.req.HomeSubjectReq;
import com.syyo.gulimall.coupon.mapper.HomeSubjectMapper;
import com.syyo.gulimall.coupon.service.HomeSubjectService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;


/**
 * 首页专题表【jd首页下面很多专题，每个专题链接新的页面，展示专题商品信息】
 *
 * @author syyo
 * @email syyo@gmail.com
 * @date 2021-01-20 09:35:54
 */
@Service
public class HomeSubjectServiceImpl extends ServiceImpl<HomeSubjectMapper, HomeSubjectEntity> implements HomeSubjectService {

    @Autowired
    private HomeSubjectMapper homeSubjectMapper;


    /**
     * 新增
     */
    @Override
    @Transactional
    public int add(HomeSubjectReq req) {
        HomeSubjectEntity entity = new HomeSubjectEntity();
        // 添加创建时间和更新时间
        BeanUtils.copyProperties(req, entity);
        int insert = homeSubjectMapper.insert(entity);
        if (insert != 1) {
            throw new SysException(ResultEnum.E_10001.getCode(), ResultEnum.E_10001.getMessage());
        }
        return insert;
    }

    /**
     * 删除
     */
    @Override
    @Transactional
    public int del(Integer id) {
        int insert = homeSubjectMapper.deleteById(id);
        if (insert != 1) {
            throw new SysException(ResultEnum.E_10002.getCode(), ResultEnum.E_10002.getMessage());
        }
        return insert;
    }

    /**
     * 编辑
     */
    @Override
    @Transactional
    public int edit(HomeSubjectReq req) {
        HomeSubjectEntity entity = new HomeSubjectEntity();
        // 添加更新时间
        BeanUtils.copyProperties(req, entity);
        int insert = homeSubjectMapper.updateById(entity);
        if (insert != 1) {
            throw new SysException(ResultEnum.E_10003.getCode(), ResultEnum.E_10003.getMessage());
        }
        return insert;
    }

    /**
     * 详情
     */
    @Override
    public HomeSubjectEntity findOne(Integer id) {
        return homeSubjectMapper.selectById(id);
    }

    /**
     * 列表
     */
    @Override
    public IPage<HomeSubjectEntity> findAll(Integer pageNum, Integer pageSize, HomeSubjectReq req) {
        Page<HomeSubjectEntity> teacherPage = new Page<HomeSubjectEntity>(pageNum, pageSize);
        QueryWrapper<HomeSubjectEntity> wrapper = new QueryWrapper<>();
        return homeSubjectMapper.selectPage(teacherPage, wrapper);
    }

}